Finding Equations of Lines

Determine the slope and y-intercept from the following equation:   y = 3/2x + 3

• slope: 5   y-intercept:  (0,3) 

• slope: 3/2   y-intercept:  (0,3) 

• slope:  4  y-intercept:  (0,3/2)

• slope: 1/5   y-intercept:  (0,5) 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write the equation of the line.

• y=3/5x+1

• y=3/5x-1

• y=5/3x+1

• y=3/5x+1

Write the equation for the line.

• y= -1x+3

• y= 4x+3

• y=1/4x+3

• y= -4x+3

Write the equation of the line.

• y= -1x-3

• y= -3x-1

• y=-1/3x-1

• y= -3x-3

Mathematical Equivalence

ON

Tags

CCSS.8.EE.B.5

Write the equation of the line.

Mathematical Equivalence

ON

Write an equation in slope-intercept form for a line that passes through the points (-7, 0) and (1, 8).

Mathematical Equivalence

ON

Answer explanation

1. Make a table in Desmos.

2. Underneath the table type:

y₁ ~ mx₁ + b

3. Plug in your numbers for m and b in the slope intercept form equation: y = mx + b.

In this problem, the m is 1 and b is 7.

So the correct answers are either y = 1x + 7 or y = x + 7.

Tags

A.3(C)

y=-3x+1

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Mathematical Equivalence

ON

y = -4x - 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2